142 ONAfiUACEiE. (EVENING-PRIMROSE FAMILY.) 



9. L. capitata, Michx. Smooth; stem mostly simple, slender, angled 

 above ; haves long, lanceolate, acute, sessile, the lowest ones broader and ob- 

 tose ; Bowers in a compact oblong or ovate head, tbe lower ones sometimes 

 Mattered : petals minute, mostly wanting; capsule obtusely 4-angled, somewhat 

 narrower at the base, longer than the calyx-lobes. — Wet pine barrens, Florida 

 to North Carolina. July and August. — Stem 2° - 3° high. 



10. L. lanceolata, Ell. ! Smooth ; stem stout, terete, at length much 

 branched ; leaves lanceolate, sessile ; flowers very numerous, in all the axils, 

 green ; petals none ; capsule cubical, with the sides flat and the angles mar- 

 gined, twice as long as the calyx-lobes ; seeds cylindrical. — Ponds and swamps 

 in the pine barrens, Florida and Georgia. July - Sept. — Stem l°-2° high. 

 Flowers small. 



11. L. alata, Ell. Smooth; stem slender, simplo or sparingly branched 

 near the summit, strongly angled ; leaves cuneatc-lanccolatc, obscurely denticu- 

 late ; flowers few, near the summit of the branches, white ; petals none ; capsule 

 cuhic-ohconieal, with concave sides and winged angles, as long as the calyx- 

 lobes ; seeds ovoid. — Brackish marshes, Florida to North Carolina, and west- 

 ward. July and August. — Stem 2° - 3° high. 



12. L. microcarpa, Michx, Smooth; stem low, creeping at the base, 

 3-anghd, mostly simple ; leaves spatulate-obovate ; petals none ; capsule mi- 

 nute, cubic-obconical, shorter than the calyx-lobes. — Muddy places, Florida to 

 North Carolina, and westward. July and August. — Stem 6' -12' high. Cap- 

 sule scarcely larger than a pin's head. 



* * * Stems creeping : leaves opposite. 

 -t- Petals none. 



13. L. pallistris, E1L Smooth; stems diffuse; leaves obovatc, tapering 

 into a long petiole ; capsule oblong or obconical, obscurely 4-sided, longer than 

 the calyx-lobes. — Ditches and muddy places, common. June- Sept. — Stems 

 C-12' long. 



14. L. spathulata, Torr. is Gray. Pubescent and somewhat hoary; 

 spatulate-obovate; capsule ovoid; otherwise like the preceding. — Mar- 

 gins of pine-barren ponds, Middle Florida. July and August. 



«- *- Petal* 4. 

 1"). Li. natans, Ell. Smooth; steins diffuse; leaves obovate, arutish, ta- 

 pering into a long petiole ; Bowers Bhort-pedicelled ; petals roundish, as long as 

 die loins of the calyx ; capsule obtusely 4-anglcd, narrowed at the base. — 



Marshes and margins of Btreams, Florida to North Carolina, and westward. 



July -Sept. — Resembles No. IS, but is every way larger. 



16. Ii. arcuata, Walt Smooth; haves lanceolate, narrowed at tbe base, 

 acute; flow era oo peduncles usually longer than the leaves, 2-bracted at the 

 linear-lanceolate, shorter than the obovate petals ; capsule cla- 

 ry, ,i _ Muddy margins of ponds, &&, Florida to North Carolina. July. 

 — Steins 4'-S' long. 



